Orland >> A golden trout and blue gill perch on the mantle, a leopard eel lurks in a hallway, a queen angelfish hovers near the wall — Mike Buelna’s home is swimming with fish. Earlier this month, he ...

A fish swims around in a tank, just being its normal fish self. But all the while, its path is being plotted in 3-D space. Each point stacks on the next, evolving into a twisting knot of tubes, so ...